Gnage
offset printing device



DEFENSIVE PUBLICATIQN UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16, 1969, S69 O.G. 687. The abstracts of Defensive Publicationapplications are identified b The heading of each abstract indicates thenumber of pages of y distinctly numbered series and are arrangedchronologically. specification, including claims and sheets of drawingscontained in the application as originally filed. The files of theseapplications are available to the public for inspection and reproductionmay be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oiiice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED JUNE 16, 1970 a m a 2, w w m E060. e D WM MQQW 1 .W s 8 E .H Wm YSfi a 0 1 0 !T0 !41P 7 8 .1 TRas c m mws a tn m wm mum FWRD H we a ev k i i m F 1 A device for offset electrostatic printing is providedwherein an offset transfer member in the form of a roller or a rollersegment is moved along a path past a plurality of transfer stations,each station having an electrostatic liquid toned image, for example,one of three color separation images, which is transferred to the offsettrans fer member. These images are transferred sequentially and inregistry and subsequently are transferred all together to a receiver. Apotential may be applied to the offset member which is opposite thecharge on the electrostatic toner to facilitate each transfer. Apotential may be a plied to the receiver which is opposite that on theoffset transfer member to facilitate transfer of the registered tonerimages from the offset transfer member to the receiver. The offsettransfer device may comprise an aluminum transfer roller having a Tefloncoating, which roller is rotatably supported in a carriage. The carriageis driven along a path past a plurality of transfer stations. A rackextends along the path which engages and turns a pinion which in turnrotates the transfer roller as it is moved along the path.

June 16, 1970 o. w. GNAGE OFFSET PRINTING DEVICE Filed Dec.v 5, 1969OLIVER W. GNAGE INVENTOR. BY/ l M ATTORNEYS

